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Patients with need for cholangioscopy due to gallstones or histological evaluation of strictures

cholangioscopy with Frimberger duodenoscope system by the company of Karl Storz GmbH

cholangioscopy (Frimberger)

Thomas Rösch, Prof. Dr.

Karl Storz GmbH (Gesellschaft mit beschränkter Haftung) company developed a cholangioscopic device, which is designed to give a better flexibility to the cholangioscopy tip in order to enable optimal diagnostic and therapeutic precondition. Other than the conventional mother-baby technique, the insertion of the cholangioscope (baby part) is done by a port at the side of a specially developed duodenoscope (mother part) which is prepositioned distally to the control unit, near to the patient's mouth. Better manoeuverability of the device tip will lead to both a better accuracy in taking biopsies as well as a better flexibility in lithotripsy manoeuvres. This study is designed to test the efficiency of the device in relation to this assumption.

Cholangioscopy is a subsidiary treatment in endoscopic retrograde cholangiopancreaticography (ERCP), used for special issues. In the context of ERCP, a long,thin shaped device is introduced through the working channel of a duodenoscope and then through the papilla into the biliary duct.

Inspection of the biliary duct can be used for tumor biopsies as well as for gall stone lithotripsy by laser or electrohydraulic technique.

Manoeuverability of cholangioscopes is limited by the length of the scope, even more, since most of the device body is stuck in the working channel.

The newly designed cholangioscope by the company of Karl Storz GmbH is introduced through a shortened working channel. Introduction of the cholangioscope is done by an innovative side port for the cholangioscope at 70 cm from the insertion tube's distal end. This leads to a better flexibility of the device tip. Better manoeuverability of the device tip will lead to both a better accuracy in taking biopsies as well as a better flexibility in lithotripsy manoeuvres.

This study is designed to test the efficiency of the device in relation to this assumption.

Prospective Multicenter Evaluation of a New Short-access-cholangioscope for Biliary Duct Strictures and Gall Stones

1. complete lithotripsy in a single session
2. rate of right positive malignoma diagnostics (sensitivity)

Number of complications during examination and during monitoring over 24 hours post procedure

Time of procedure and success of stone extraction in %

Number of biopsies taken. Evaluation of quality of biopsies by pathologists (pathological department of University Hospital Hamburg Eppendorf).

Minimum number of bioptic manoeuvres: 3 Comparison with brush cytology (3 brush manoeuvres with 12 smear preparations) by reference cytologist (Dr. Topalidis, Hannover)

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization	Link
Prospective Multicenter Evaluation of a New Short-access-cholangioscope for Biliary Duct Strictures and Gall Stones	NCT01683240	Choledocholithi... Common Bile Duc... Cholestasis	cholangioscopy ...	18 Years -	Universitätsklinikum Hamburg-Eppendorf
Prospective Multicenter Evaluation of a New Short-access-cholangioscope for Biliary Duct Strictures and Gall Stones	NCT01683240	Choledocholithi... Common Bile Duc... Cholestasis	cholangioscopy ...	18 Years -	Universitätsklinikum Hamburg-Eppendorf

Spots Global Cancer Trial Database for cholangioscopy (frimberger)